Acta Chimica Sinica ›› 2020, Vol. 78 ›› Issue (1): 76-81.DOI: 10.6023/A19100371 Previous Articles     Next Articles

Special Issue: 分子探针与纳米生物学



王英美a, 朱道明b, 杨阳b, 张珂b, 张修珂a, 吕明珊a, 胡力a, 丁帅杰a, 王亮a   

  1. a 新疆大学生命科学与技术学院 乌鲁木齐 830046;
    b 武汉大学物理科学与技术学院 武汉 430000
  • 投稿日期:2019-10-16 发布日期:2020-01-17
  • 通讯作者: 王亮

Rapid Synthesis of Bi@ZIF-8 Composite Nanomaterials for the Second Near-infrarad Window Photothermal Therapy and Controlled Drug Release

Wang Yingmeia, Zhu Daomingb, Yang Yangb, Zhang Keb, Zhang Xiukea, Lv Mingshana, Hu Lia, Ding Shuaijiea, Wang Lianga   

  1. a College of Life Science and Technology, Xinjiang University, Urumqi 830046;
    b School of Physical and Technology, Wuhan University, Wuhan 430000
  • Received:2019-10-16 Published:2020-01-17

With the development of nanotechnology and its penetration into the field of medicine, nanotechnology has opened a new way for the treatment of tumors. Building an effective nanocarrier system is significant for the treatment of tumors. Compared with the traditional drug therapy, the drug which uses the nanomaterial as the carrier can greatly improve the treatment effect of the medicine and the side effect caused by the medicine in the in-vivo circulation process is extremely reduced simultaneously. At the same time, due to the protective effect of the carrier, the stability of the drug can be improved obviously. In this paper, we report a composite nanomaterial Bi@ZIF-8@TPZ (BZT) which is the formation of Bi nanoparticles and tirapazamine (TPZ) embedded in ZIF-8, this novel nanomaterial combines chemotherapy with photothermal therapy in the second near-infrared region (NIR-II), and achieves a good therapeutic effect. First, we prepared a Bi@ZIF-8 (BZ) nanoparticle by a simple one-step reduction method. The morphology and microstructure of the nanoparticle were analyzed by transmission electron microscopy (TEM) and X-ray diffraction (XRD). Next, the anticancer drug tirapazamine (TPZ) was efficiently loaded into the BZ nanomaterial by physical mixing. The UV absorption spectrum proved that it could be successfully loaded, and the loading efficiency (LE) was 30%. Furthermore, the embedded Bi nanoparticles make the composite nanomaterials have good photothermal properties in NIR-II area, and the photothermal conversion efficiency is about 31.75%. Because ZIF-8 has a good pH response ability, the material can achieve controllable drug release under weak acid (pH=5.5) and light conditions. In vitro results show that BZ loaded with the chemotherapeutic drug TPZ can achieve a good therapeutic effect. The composite materials reported in this article realize the synergistic treatment of chemotherapy and NIR-II photothermal treatment, which makes it highly clinically useful.

Key words: nanoparticle, tirapazamine, second near-infrared window (NIR-II), synergistic treatment